You need both to be in-network: a credentialed provider linked to a
contracted TIN. The failure modes are the gaps between them: credentialed but
no contract (paid out-of-network or not at all), contracted entity but a new
associate not yet credentialed under it (their claims deny while colleagues’
pay), or a new TIN after an
entity change that silently orphans the old
contract.
The fix is always the same question to the payer: “Is this provider
credentialed, and is this TIN contracted, and are they linked?” Full
process: Get credentialed and
Payer contracting.
How insurance money moves
Credentialing vs. contracting
Two different processes people constantly conflate: one verifies you, the other pays you.
“I’m credentialed with Aetna” usually means one of two very different things,
and the difference decides whether your claims pay in-network.
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